TODO document
@article{song2020unsupervised,
title={Unsupervised domain adaptive re-identification: Theory and practice},
author={Song, Liangchen and Wang, Cheng and Zhang, Lefei and Du, Bo and Zhang, Qian and Huang, Chang and Wang, Xinggang},
journal={Pattern Recognition},
volume={102},
pages={107173},
year={2020},
publisher={Elsevier}
}